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SLD · MINING ELECTRICAL SLD

Mining Electrical Single-Line Diagrams

Mining electrical single-line diagrams (SLDs) are essential for designing, operating, and maintaining power distribution networks in surface and underground mines. These diagrams provide a simplified overview of the electrical system, showing major equipment like transformers, switchgear, motor control centers (MCCs), and emergency generators, along with voltage levels and interconnections.

4 EXAMPLES· UPDATED 2026-08-03
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MINING

Mine Processing Plant 600 V MCC

MINING ELECTRICAL

Open Pit Iron Ore Mine 33 kV Line with SAG Mill Motors and Soft Starters

MINING

Surface Copper Mine 15 kV Electrical Distribution

MINING

Underground Gold Mine 440V System with Emergency Generator and Lighting

ABOUT

About these examples.

Whether you're planning a new mine electrical infrastructure or troubleshooting existing systems, our gallery of mining SLD examples offers practical references for various scenarios—from high‑voltage distribution in an open pit to low‑voltage emergency lighting in an underground setup.

Each example is customizable. Click any diagram to open it in the editor, or start from scratch using the tools below.

HOW TO

Make one yourself.

  1. 1

    Choose a mining SLD template

    Start with a pre-built example for surface or underground mining to save time.

  2. 2

    Add power sources

    Drag and drop utility feeds, mine‑site generators, and transformers to represent your incoming supply.

  3. 3

    Build the distribution backbone

    Insert buses, switchgear, and circuit breakers to create your main voltage levels (e.g., 33 kV, 15 kV, 480 V).

  4. 4

    Connect loads and motor centers

    Place SAG mill motors, crusher MCCs, ventilation fans, and lighting panels with appropriate running loads.

  5. 5

    Label and finalize

    Add voltage ratings, equipment tags, and cable sizes, then export or share your diagram.

FAQ

Frequently asked questions

What is a single-line diagram in mining?01
A mining single‑line diagram is a simplified electrical schematic that shows the flow of power from the source to the loads in a mine site. It uses standard symbols to represent transformers, switchgear, motors, and other equipment, omitting detailed wiring for clarity.
What voltage levels are common in mining electrical systems?02
Typical voltages in mining include high voltage (e.g., 33 kV or 15 kV) for primary distribution, medium voltage (4.16 kV or 6.6 kV) for large motors, and low voltage (480 V, 440 V, or 220 V) for smaller equipment, lighting, and controls.
How do I include emergency systems in a mining SLD?03
Add a standby generator symbol connected through an automatic transfer switch (ATS) to the essential loads bus. Clearly mark the generator rating and the loads it supports, such as emergency lighting, ventilation fans, or pump systems.
Can I customize the symbols in the mining electrical SLD?04
Yes, the diagram maker allows you to modify all symbols and add custom icons. You can also adjust line styles, colors, and layouts to match your company standards or specific site requirements.
Is there a template for underground mining SLDs?05
Absolutely. Our gallery includes underground mining examples, like the 440 V system with emergency generator and lighting. You can clone and adapt these templates for your own underground operation.
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